<template>
  <div id="app">
    <div class="box">
      <div class="v-html" v-html="loading[index]" v-show="isHtml"></div>
      <div class="v-text" v-text="loading[index]" v-show="!isHtml"></div>
      <div></div>
    </div>
    <div class="btn">
      <div class="change-btn" @click='changeShow'>{{isHtml ? "查看源码" : "查看示例"}}</div>
      <div class="loading-btn">
        <div class="loading-btn-item" @click="index=0">1</div>
        <div class="loading-btn-item" @click="index=1">2</div>
        <div class="loading-btn-item" @click="index=2">3</div>
      </div>
    </div>
  </div>
</template>
<script>
  import { ref } from 'vue'
  import "../assets/css/loading.css"
  export default {
    setup() {
      const index = ref(0)
      const loading = [
        `<div class="sk-chase">
                    <div class="sk-chase-dot"></div>
                    <div class="sk-chase-dot"></div>
                    <div class="sk-chase-dot"></div>
                    <div class="sk-chase-dot"></div>
                    <div class="sk-chase-dot"></div>
                    <div class="sk-chase-dot"></div>
                  </div>`,
        `<div class="spinner">
                    <div class="rect1"></div>
                    <div class="rect2"></div>
                    <div class="rect3"></div>
                    <div class="rect4"></div>
                    <div class="rect5"></div>
                  </div>`,
        `<div class="sk-cube-grid">
                    <div class="sk-cube sk-cube1"></div>
                    <div class="sk-cube sk-cube2"></div>
                    <div class="sk-cube sk-cube3"></div>
                    <div class="sk-cube sk-cube4"></div>
                    <div class="sk-cube sk-cube5"></div>
                    <div class="sk-cube sk-cube6"></div>
                    <div class="sk-cube sk-cube7"></div>
                    <div class="sk-cube sk-cube8"></div>
                    <div class="sk-cube sk-cube9"></div>
                  </div>`
      ]
      const isHtml = ref(true)
      const changeShow = () => {
        isHtml.value = !isHtml.value
      }
      return {
        index,
        loading,
        isHtml,
        changeShow,
      }
    },
  }
</script>
<style scoped>
  body {
    margin: 0;
    padding: 0;
  }

  #app {
    width: 100%;
    height: 100vh;
    background: linear-gradient(to right, #7474bf, #348ac7);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: #FFF;
  }

  .box {
    width: 400px;
    height: 350px;
    display: flex;
    justify-content: center;
    align-items: center;
  }

  .box .v-text {
    width: 100%;
    height: 100%;
  }

  .btn {
    width: 200px;
    height: 150px;
    margin-top: 10px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    user-select: none;
  }

  .btn .loading-btn {
    width: 100%;
    display: flex;
    justify-content: space-between;
  }

  .btn .loading-btn .loading-btn-item {
    width: 35px;
    height: 35px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 50%;
    text-align: center;
    line-height: 35px;
    cursor: pointer;
  }

  .btn .change-btn {
    width: 100px;
    height: 30px;
    line-height: 30px;
    text-align: center;
    background-color: rgba(0, 0, 0, 0.2);
    cursor: pointer;
    border-radius: 20px;
    font-size: 13px;
    letter-spacing: 2px;
  }
</style>